A Listly List - Sri Lanka, often referred to as the "pearl of the Indian Ocean," boasts an unparalleled reputation for producing some of the world's most exquisite gemstones. Here's a guide to the best gemstones you can buy from Sri Lanka along with some travel tips. - Rubies, Moonstone, Cat’s Eye Chrysoberyl, Tips for Buying Gemstones in Sri Lanka, Alexandrite, Ceylon Sapphire, and Other Things to Do in Sri Lanka During Your Gem Hunt